In recent years, police have provided more ways to do that online. But convincing people that anonymous means anonymous can be difficult.

In the cellphone video, taken March 10 and released by Stockton police, several people are shown gathered on a residential street when gunfire erupts.

Shots explode, and a block away, 21-year-old Francisco Martinez walks out of his house to see what is going on. He's hit by a stray bullet.

Martinez died at a hospital following the shooting at Eighth and Scribner streets.

"As you look at the video, you can see a lot of people who were either on the sidewalk or on the street, so we obviously know someone or some people saw exactly what happened," said Officer Joe Silva, a spokesman for the police department.

Officers said not a single person has submitted so much as an anonymous tip -- which is a situation all too common in Stockton.

In recent years, the Stockton Police Department has worked to make providing anonymous tips easy.

Tips can be called in, text messaged in, or submitted through Facebook.

The department has seen an increase in the volume of tips, but in many cases, officers said no one wants to be called a snitch.

Police do not believe the person who posted the video online has anything to do with the crime.

Officers also want to remind the community that an anonymous tip will always stay exactly that -- anonymous.